Zechariah 14:8

And it shall be in that day, [that] living waters shall go out from Jerusalem,.... When it shall be light; and this is one of the things which will make it so; for by "living waters" are meant the Gospel, and the doctrines of it; compared to running "waters" for the sound of them, which will then go into all the earth; for the swiftness in which they shall proceed; for their rapidity and force in bearing all before them; for the great spread of them; and for their virtue and efficacy in cooling those who are inflamed with the fiery law; refreshing thirsty souls; purifying the hearts and lives of sinners, and making those that are barren fruitful: and to "living" waters, because they are the means of quickening dead sinners, and of reviving drooping saints; and because they serve to support and maintain a spiritual life, and nourish up unto eternal life, and direct the way to it, as well as give the best account of it: and these will come out of Jerusalem; which may design Jerusalem literally, which will be rebuilt at the time of the Jews' conversion; or mystically the church, the spiritual and heavenly Jerusalem; see Heb 12:22 reference seems to be had to the first ministration of the Gospel, which, according to prophecy, came out of Jerusalem, Isa 2:3.